A twist lock, also known as a quarter-turn fastener or a cam lock, is a type of lock that is commonly used on electrical enclosures, panels, and other industrial equipment. It consists of a male and female part, with the male part typically having a square or hexagonal head that is inserted into the female part. The female part has a spring-loaded mechanism that engages with the head of the male part, preventing it from being withdrawn unless the lock is turned. Twist locks are typically opened and closed using a key, but there are also keyless models available.
There are several ways to unlock a twist lock without a key. One method is to use a flathead screwdriver or other thin object to pry open the female part of the lock. Another method is to use a pair of pliers to grip the head of the male part and turn it. If the lock is old or damaged, it may be possible to simply break it open using a hammer or other blunt object. However, it is important to note that these methods may damage the lock or the equipment it is attached to.